Nuclear matrix elements of 0{nu}{beta}{beta} decay with improved short-range correlations

Journal Article · Wed Aug 15 04:00:00 EDT 2007 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.76.024315· OSTI ID:21061954

Kortelainen, Markus; Suhonen, Jouni ^[1]

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1. Department of Physics, University of Jyvaeskylae, P.O. Box 35, FIN-40351 Jyvaeskylae (Finland)

Nuclear matrix elements of the neutrinoless double beta (0{nu}{beta}{beta}) decays of {sup 96}Zr, {sup 100}Mo, {sup 116}Cd, {sup 128}Te, {sup 130}Te, and {sup 136}Xe are calculated for the light-neutrino exchange mechanism by using the proton-neutron quasiparticle random-phase approximation (pnQRPA) with a realistic nucleon-nucleon force. The particle-particle strength parameter g{sub pp} of the pnQRPA is fixed by the data on the two-neutrino double {beta} and single {beta} decays. The finite size of a nucleon, the higher-order terms of nucleonic weak currents, and the nucleon-nucleon short-range correlations (s.r.c) are taken into account. The s.r.c. are computed by the traditional Jastrow method and by the more advanced unitary correlation operator method (UCOM). A comparison of the results obtained by the two methods reveals that the UCOM computed matrix elements are considerably larger than the Jastrow computed ones. This result is important to the assessment of the neutrino-mass sensitivity of present and future double {beta} experiments.

• OSTI ID: 21061954
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 2 Vol. 76; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CADMIUM 116
COMPARATIVE EVALUATIONS
CORRELATIONS
DOUBLE BETA DECAY
MATRIX ELEMENTS
MOLYBDENUM 100
NEUTRINOS
NEUTRONS
NUCLEAR MATRIX
PROTONS
RANDOM PHASE APPROXIMATION
REST MASS
SENSITIVITY
TELLURIUM 128
TELLURIUM 130
XENON 136
ZIRCONIUM 96